We got this gym as a present for the birth of our baby boy when he was about 4 weeks and it has been a hit from the start. It did not take long at all before he understood that kicking the pad results in all sorts of tunes to which he wiggled and laughed out loud as of very young age. Also the included support pillow was very useful for the initial tummy time and all the toys have been loved. My baby was happy to spend up to 15 minutes or so on it, kicking away or playing with the toys, which gave some welcome rest/bath time (would just take it into the bathroom)in the early days. ;-) Also easy to take on holidays.
Would definitely recommend this toy!